RFR: 8297065: DerOutputStream operations should not throw IOExceptions [v2]

[Valerie Peng]

On Wed, 23 Nov 2022 19:48:48 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> This is mostly cleanup. Everything around `DerOutputStream` no longer throws an `IOException`. This includes:
>> 
>> - Remove unnecessary `throws IOException` in code and spec
>> - Remove `catch (IOException ioe)` blocks. If new exception is thrown, remove further `throws` in code and spec
>> - More classes implementing `DerEncoder` if they have a `encode(DerOutputStream)` method
>> - Modify `write(bytes)` to `writeBytes(bytes)` to avoid IOE
>> - Some unused methods removed
>> - `DerOutputStream` is final
>> 
>> The only actual changes (still trivial) are:
>> - Since `PKCS7::encodeSignedData(OutputStream out)` is removed, its usages in `PKCS7::constructToken` and `TsaSigner::createResponse` (in test) are modified to use another method with a `DerOutputStream` argument.
>> - In PKCS8Key, since `getEncodedInternal` never returns non-null, remove null check on result
>> - Since `DerOutputStream` is final, no need to clone bytes in `encode` of `X509CertImpl` and `X509CRLImpl`.
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   one more

src/java.base/share/classes/sun/security/x509/X509Key.java line 321:

> 319:      * Returns the DER-encoded form of the key as a byte array.
> 320:      *
> 321:      * @exception InvalidKeyException on encoding errors.

should remove this line?

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PR: https://git.openjdk.org/jdk/pull/11302